Paine Field, Everett, sometimes known as Snohomish County Airport, is in Seattle and is best known for being the production factory for Boeing, who manufacture the 747, 767, 777 and 787 aircraft here. The airport also house many other aviation facilities among which are three aviation museums. Boeing now have a modern ‘tour’ centre which includes a viewing balcony. The centre is where the tours of the production line start and finish. Unfortunately no cameras are allowed on the tours, but photography is permitted from the viewing balcony. If you are lucky a test flight of a new Boeing may take place while on the balcony.